Generally the "project namespace" refers to namespace integers 4 and 5, which come with a standard MediaWiki install. Project: and Project talk: are both canonical namespace names referencing namespaces 4 and 5. It may be better to pick a different name for the namespace to avoid confusion (or use the current project namespace instead of adding a new namespace).

Also, please be sure to follow the steps listed here: http://meta.wikimedia.org/wiki/Requesting_wiki_configuration_changes (particularly using an ?oldid=).

michael.moroni wrote:

I hope I inserted the corrected link.
By now projects are created in the namespace 4, the Wikipedia's namespace (Vikipedio:Projekto:ProjectName or Vikipedio:Vikiprojekto:ProjectName), so I ask if community wants to have a namespace Project (it will be Projekto:ProjectName or Vikiprojekto:ProjectName).

(In reply to comment #2)

I hope I inserted the corrected link.
By now projects are created in the namespace 4, the Wikipedia's namespace
(Vikipedio:Projekto:ProjectName or Vikipedio:Vikiprojekto:ProjectName), so I
ask if community wants to have a namespace Project (it will be
Projekto:ProjectName or Vikiprojekto:ProjectName).

Using 'Project' or a translation of 'Project' as a namespace name is not possible for technical reasons (it's an alias for the Wikipedia/Vikipedio namespace).

michael.moroni wrote:

(In reply to comment #3)

(In reply to comment #2)

I hope I inserted the corrected link.
By now projects are created in the namespace 4, the Wikipedia's namespace
(Vikipedio:Projekto:ProjectName or Vikipedio:Vikiprojekto:ProjectName), so I
ask if community wants to have a namespace Project (it will be
Projekto:ProjectName or Vikiprojekto:ProjectName).

Using 'Project' or a translation of 'Project' as a namespace name is not
possible for technical reasons (it's an alias for the Wikipedia/Vikipedio
namespace).

So, why are there in some wikipedias (example: the italian, the french and the finnish one) the namespaces Project and Wikipedia?

(In reply to comment #4)

So, why are there in some wikipedias (example: the italian, the french and the
finnish one) the namespaces Project and Wikipedia?

Ah, my bad, translations of 'Project' do work, only the exact names 'Project' and 'Project talk' will cause conflicts.

michael.moroni wrote:

(In reply to comment #5)

(In reply to comment #4)

So, why are there in some wikipedias (example: the italian, the french and the
finnish one) the namespaces Project and Wikipedia?

Ah, my bad, translations of 'Project' do work, only the exact names 'Project'
and 'Project talk' will cause conflicts.

In fact, we want these namespaces: (:D)

• Projekto: → translation of Project
• Projekta diskuto: → translation of Project talk

(I moved all the pages thinking that there were this namespaces)
My best regards

The localized namespace names, as their own namespace, have been added to eowiki per the above request.